TY  - GEN
TI  - 1950 supplement to book of ASTM standards: including tentatives / 3
KW  - <MATERIALES><CEMENTO><CONCRETO><CERAMICA><AISLACION TERMICA><CARRETERAS><IMPERMEABILIZACION><TIERRAS><NORMAS><NORMAS ASTM><SUPLEMENTOS><1950><ASTM STANDARDS>
ER  -